1520984873 has 2 divisors, whose sum is σ = 1520984874. Its totient is φ = 1520984872.

The previous prime is 1520984851. The next prime is 1520984887. The reversal of 1520984873 is 3784890251.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1480941289 + 40043584 = 38483^2 + 6328^2 .

It is a cyclic number.

It is not a de Polignac number, because 1520984873 - 2⁶ = 1520984809 is a prime.

It is a super-2 number, since 2×1520984873² = 4626789967789652258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1520984573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760492436 + 760492437.

It is an arithmetic number, because the mean of its divisors is an integer number (760492437).

Almost surely, 2^1520984873 is an apocalyptic number.

It is an amenable number.

1520984873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520984873 is an equidigital number, since it uses as much as digits as its factorization.

1520984873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 1520984873 is about 38999.8060636204. The cubic root of 1520984873 is about 1150.0276925909.

The spelling of 1520984873 in words is "one billion, five hundred twenty million, nine hundred eighty-four thousand, eight hundred seventy-three".